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Table 2 Multiple regression analysis looking for independent variables influencing MIAP

From: Integration of inspiratory and expiratory intra-abdominal pressure: a novel concept looking at mean intra-abdominal pressure

  Unstandardized coefficients Standardized coefficients    95.0% Confidence interval for B
Model B Standard error Beta t Significance Lower bound Upper bound
(Constant) −0.27 0.20   −1.4 0.164 −0.66 0.11
PEEP 0.01 0.00 0.01 2.1 0.040 0.00 0.01
ΔP alv 0.01 0.01 0.02 1.5 0.133 0.00 0.02
I:E ratio 0.48 0.04 0.04 12.3 0.000 0.40 0.56
IAPee 0.99 0.01 0.86 144.6 0.000 0.98 10.01
ΔIAP 0.35 0.03 0.16 11.3 0.000 0.29 0.41
TAI 0.00 0.00 0.01 1.1 0.259 0.00 0.01
C ab 0.00 0.00 −0.01 −1.6 0.105 0.00 0.00
  1. PEEP, positive end-expiratory pressure; P alv, alveolar pressure; I:E ratio, inspiratory-to-expiratory ratio; IAPee, end-expiratory IAP; TAI, thoraco-abdominal index of transmission; C ab, abdominal wall compliance.